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Crustal Deformation Corrections for the Combined Adjustment of Astro-geodetic Net with GPS 2000 Net in China

XU Caijun 1,2 WANG Hua 1,2 CHENG Pengfei 3 ZHANG Li 3 (1 School of Geodesy and Geomatics, Wuhan University, 129 Luoyu Road, Wuhan 430079, China) (2 Key Laboratory of Geospace Environment and Geodesy,Ministry of Education, Wuhan University, 129 Luoyu Road, Wuhan 430079, China) (3 Chinese Academy of Surveying and Mapping,16 Beitaiping Road, Haidian District, Beijing 100039, China)  
Based on the bi\|cubic Bessel spline function method, this paper inverts the present\|day crustal horizontal velocity field and deformation field in China continent by combining GPS velocities obtained by high\|precision GPS network adjustment, seismic moment tensor data and fault slip rates. By this velocity and deformation field model, this paper analyzes the necessity of crustal deformation correction for the geodetic network observations in the joint adjustment of geodetic network and GPS2000 network.
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